OBD1 PCM interchange/compatibility, 5.2 vs 5.9

fshd4it said

My friend and I are slowly stripping a '99 1500 that had a 5.2. I've got the fuel rail (as well as the motor) already, I can go back and get the pump and lines. Semi-big job, but I could swap all that out. As long as there aren't too many other hurdles.

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Don't think the fuel pump would swap. I could be wrong, but seems like I looked at that. I would also guess the line would be iffy since the Dakota and Ram are pretty different in size.

Then again, maybe I thought about it and dropped the idea because I didn't want to try.

I really think all you need to do is pull the vacuum line off the FPR and only worry about adjusting the pressure if it is below the spec for whatever PCM you are running. And I would match the injectors to the PCM as well.